Bubble lamp



FIG. 1 is a top and front perspective view of a bubble lamp of the invention;

FIG. 2 is a top plan view of the bubble lamp shown in FIG. 1;

FIG. 3 is a front elevation view of the bubble lamp shown in FIG. 1; and,

FIG. 4 is a bottom plan view of the bubble lamp shown in FIG. 1. 

The ornamental design for a bubble lamp, as shown and described. 